{
    "id": "CVE-2019-19919",
    "published": "2019-12-20 23:15:11",
    "last_modified": "2026-06-17 02:27:27",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-1321",
    "description": "Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's __proto__ and __defineGetter__ properties, which may allow an attacker to execute arbitrary code through crafted payloads.",
    "epss_score": "0.07066",
    "epss_percentile": "0.94026",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:20",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "handlebars.js_project",
            "product": "handlebars.js"
        },
        {
            "vendor": "tenable",
            "product": "tenable.sc"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://www.npmjs.com/advisories/1164",
        "https://www.tenable.com/security/tns-2021-14",
        "https://www.npmjs.com/advisories/1164",
        "https://www.tenable.com/security/tns-2021-14"
    ]
}